For the un-initiated, SOPA will “authorize the U.S. Department of Justice to seek court orders against websites outside U.S. jurisdiction accused of infringing on copyrights, or of enabling or facilitating copyright infringement”

Refer the link for details of the blackout. Also, follow this link for “All The Info”

The below video tells you about all you need to know about the bad bad details of these bill, which if passed will kill the freedom of online speech.